Therefore,it is put forward that studies that the effect of longitudinal reinforcement ratio on shear behavior of restrained beams with web reinforcement when the top longitudinal reinforcement of beam is truncated according to the China Design Code,and comparing the results of different tests,and then wishing that that find some disciplinarian approaching the civil practice.

But it was surprising that the variation of ratio, |M -/M +| does not cause the visible change in shear capacity of restrained beams,that is,the shear strength depends on a/h 0 only but not M/Vh 0 . Besides,it is found also that the stress of stirrup placed in central section of the “shear span a ” is always bigger than the stress in both end parts.

In this paper, some of the problems are studied, as listed below:(1) In the previous theories of restrained steel beams, because the stress distribution in the model changes abruptly when it yields, the behaviour of restrained beams is not continuous when it changes from elastic to plastic. In this paper, a continuous development model of stress and strain is presented, through which the above problem is solved.

The factors influncing the behavior of restrained beams subjected to fire include the loads on the beam,the stiffness of axial and rotational restraints and the temperature distribution in the cross-section of beam,etc.

By integrating the stresses,the combined moment and force in the cross-section of the beam can be obtained. Then,through subtituting the moment and axial force into the equilibrium equation,the behavior of the restrained beams in fire can be worked out.

For the restrained beams experiencing very high temperatures,the strength of steel will recover when temperature descends,but the contract force will aggravate the stress in the beam,especially at the end.

This paper revisits the effect of secondary bifurcations on the post-buckling response of a simple 3D system of elastically restrained beams, first discussed by Luongo in [19].

bottom restrained beams with 0° and -10° tilt angle, respectively, and a compressed beam, were used for comparison.

Theoretical solutions were produced to calculate the structural response of laterally restrained beams and plates subject to thermal loads.

Based on the shear tests of 18 concentrated loaded reinforced concrete restrained beams without web reinforcement, the general rule of the shear strength of such beams was investigated. It was found that the shear strength varies with shear span ratio and moment ratio, that is in the same span the moments occurred in opposite directions would influence the shear resistance of the beam. The formula for computing the shear strength of reinforced concrete restrained beams without web reinforcement...

Based on the shear tests of 18 concentrated loaded reinforced concrete restrained beams without web reinforcement, the general rule of the shear strength of such beams was investigated. It was found that the shear strength varies with shear span ratio and moment ratio, that is in the same span the moments occurred in opposite directions would influence the shear resistance of the beam. The formula for computing the shear strength of reinforced concrete restrained beams without web reinforcement was derived in this paper.

As the shear strength formulae in current Code 《TJ10-74》are not safe enough to be used in calculating continuous beams, restrained beams, and beams and columns of frame structures, the authors carried out experimental research of shear strength in reinforced concrete members with an inflection point under concentrated load, analysed data of the 170 internal and external shear strength tests of these beams and members loaded in an anti-symmetrical way, and approached factors influencing the...

As the shear strength formulae in current Code 《TJ10-74》are not safe enough to be used in calculating continuous beams, restrained beams, and beams and columns of frame structures, the authors carried out experimental research of shear strength in reinforced concrete members with an inflection point under concentrated load, analysed data of the 170 internal and external shear strength tests of these beams and members loaded in an anti-symmetrical way, and approached factors influencing the shear strength of the members with an inflection point, and the causes of its strength reduction. Finally, two corresponding formulae are proposed which agreed well with the test results.

In the underground engineerings and hydro-structures, a great deal of reinforced concrete members with lower reinforcement ratio and without web-reinforcement are adopted. These members generally bear uniform loading and there frequently exists restrained bending moment at the support. But, until now, the test studying the shear behaviors of the reinforced concrete beam without web- reinforcement under uniform loading is not enough. This paper introduces a test about shear behaviors of 6 simply supported beams...

In the underground engineerings and hydro-structures, a great deal of reinforced concrete members with lower reinforcement ratio and without web-reinforcement are adopted. These members generally bear uniform loading and there frequently exists restrained bending moment at the support. But, until now, the test studying the shear behaviors of the reinforced concrete beam without web- reinforcement under uniform loading is not enough. This paper introduces a test about shear behaviors of 6 simply supported beams and 12 restrained beams, and a idea of "Equivalent Simply Supported Beam", This paper also describes some laws about shear behaviors of the reinforced concete beams without web-reinforcement and advances a formula for estimating the shear strength, which may serve for design purpose.